Black dots -> compressions (C,c,+,U,u)
White dots -> dilatations (D,d,-)
Green dot  -> T-axis
Red dot    -> P-axis

  sta  chan net loc pol a/m   azi   dist author    irsta
  ELDTW ???  IR      C     356.49   0.13 TAP       ELDTW
  LONT  ???  IR      C     147.44   0.18 TAP       LONT 
  ECS   ???  IR      C      78.07   0.18 TAP       ECS  
  EHD   ???  IR      C      61.30   0.19 TAP       EHD  
  TWG   ???  IR      C     169.74   0.24 TAP       TWG  
  TWGBT ???  IR      C     168.18   0.24 TAP       TWGBT
  STYH  ???  IR      C     296.05   0.26 TAP       STYH 
  STYT  ???  IR      C     293.03   0.27 TAP       STYT 
  FULB  ???  IR      C      60.33   0.28 TAP       FULB 
  CHKT  ???  IR      C      82.39   0.32 TAP       CHKT 
  TWF1  ???  IR      C      40.35   0.39 TAP       TWF1 
  SGST  ???  IR      C     273.50   0.41 TAP       SGST 
  YULB  ???  IR      C      36.81   0.42 TAP       YULB 
  WTP   ???  IR      C     296.41   0.42 TAP       WTP  
  TPUB  ???  IR      C     303.63   0.44 TAP       TPUB 
  CHN1  ???  IR      C     285.57   0.47 TAP       CHN1 
  TWK   ???  IR      C     292.92   0.54 TAP       TWK  
  TWM1  ???  IR      C     247.36   0.60 TAP       TWM1 
  CHN5  ???  IR      D     329.30   0.62 TAP       CHN5 
  EAST  ???  IR      C     193.77   0.69 TAP       EAST 

sta    - Station code (FDSN)
chan   - channel code
net    - Network code (FDSN)
loc    - Location code (FDSN)
pol    - Polarity
a/m    - Automatic or manual pick
azi    - Event to station azimuth (in degrees)
dist   - Event to station distance (in degrees)
author - Author of the polarity
irsta  - International registry station code